Yes, they have (primitive) sense organs anteriorally placed - this represents cephalisation, as does the aggregation of nervous tissue to monitor and respond to impulses from the anterior sense cells/organs.
The two big dots on a planarian's head are its eyespots, which detect light and help the planarian navigate its environment. They are simple light-sensitive structures that allow the planarian to differentiate between light and dark. They also help the planarian avoid predators and find food.
1/10 & 0.1 are two ways to show one tenth
It will regenerate and become two and both of the parts will squirm around.
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Being bilaterally symmetrical means that an organism's body can be divided into two mirror-image halves along a central axis, while cephalization refers to the concentration of sensory organs and nerve cells at one end of the body, typically forming a head. For Dugesia, a type of planarian, these traits enhance its ability to navigate and interact with its environment efficiently. Bilateral symmetry allows for streamlined movement, while cephalization enables the organism to better detect and respond to stimuli, improving its chances of finding food and avoiding predators.
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A planarian has two longitudinal nerve cords that run along its body length. These nerve cords are connected by transverse nerves, forming a ladder-like nervous system.
5 over 10
The word show time can be spelled in two ways:showtime and show time.
Scientists show creativity by expirimenting in different ways.
they have bilateral symmetry and three cell layers ectoderm,endoderm and mesoderm
The flat worm must live in water, while the earthworm lives in and around the earth. The planarian detects light. The planarian can be split in two, separating left and right (and live). The earthworm can be split front and back (and live). The reverse is not true. Etc.